8111584660 has 12 divisors (see below), whose sum is σ = 17034327828. Its totient is φ = 3244633856.

The previous prime is 8111584627. The next prime is 8111584699. The reversal of 8111584660 is 664851118.

It can be written as a sum of positive squares in 2 ways, for example, as 5230471684 + 2881112976 = 72322^2 + 53676^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202789597 + ... + 202789636.

It is an arithmetic number, because the mean of its divisors is an integer number (1419527319).

Almost surely, 2^8111584660 is an apocalyptic number.

It is an amenable number.

8111584660 is an abundant number, since it is smaller than the sum of its proper divisors (8922743168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8111584660 is a wasteful number, since it uses less digits than its factorization.

8111584660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405579242 (or 405579240 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 8111584660 is about 90064.3362269439. The cubic root of 8111584660 is about 2009.2558204813.

The spelling of 8111584660 in words is "eight billion, one hundred eleven million, five hundred eighty-four thousand, six hundred sixty".